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#include <DS1302.h>
//clock config
const int kCePin = 5; // 對(duì)應(yīng)rst引腳，Chip Enable
const int kIoPin = 6; // 對(duì)應(yīng)data引腳，Input/Output
const int kSclkPin = 7; // 對(duì)應(yīng)clck引腳，Serial Clock
//建立一個(gè)ds1302 對(duì)象 rtc
DS1302 rtc(kCePin, kIoPin, kSclkPin);
//595 config
int datapin = 2; //DS 14腳用來串行輸入數(shù)據(jù)
int latchpin = 3; //st_cp 12腳注：latch 有門閂的意思，可以理解成閘門，控制并行輸出的時(shí)間
int clockpin = 4; //sh_cp 11腳 //595會(huì)在clock的上升沿讀取 1bit data, 對(duì)它的操控封裝在 shiftOut()函數(shù)里了，不需要大家自己操作。
//clock data
int data_sec = 0; //秒數(shù)數(shù)據(jù)
int data_min = 0; //分鐘數(shù)據(jù)
int data_hour = 0; //小時(shí)數(shù)據(jù)
void setup() {
Serial.begin(9600);
nixie_tube_init();
}
void loop() {
//將當(dāng)前時(shí)間存儲(chǔ)到 t 這個(gè)對(duì)象中
Time t = rtc.time();
int hour_gewei = t.hr % 10; //取得個(gè)位數(shù)字模10
int hour_shiwei = t.hr / 10;//取得十位數(shù)字處以十
int min_gewei = t.min % 10;
int min_shiwei = t.min / 10;
int sec_gewei = t.sec % 10;
int sec_shiwei = t.sec / 10;
//晚上不顯示
if( t.hr>=0 and t.hr<=6 ) {
digitalWrite(latchpin, LOW);
shiftOut(datapin, clockpin, LSBFIRST, 255);
shiftOut(datapin, clockpin, LSBFIRST, 255);
digitalWrite(latchpin, HIGH);
delay(100000);
return;
}
//分鐘數(shù)變化時(shí)來個(gè)隨機(jī)顯示
if ((min_shiwei * POW(2,4) + min_gewei) != data_min) {
random_display(30);
}
// (5 -> 0101 1-> 0001) => 0101 0001 = 0101 * 2^4 + 0001
// 10 01 => 1001 = 10 * 10^2 + 1
// data_sec = sec_shiwei * POW(2,4) + sec_gewei;
data_min = min_shiwei * POW(2,4) + min_gewei;
data_hour = hour_shiwei * POW(2,4) + hour_gewei;
digitalWrite(latchpin, LOW);
shiftOut(datapin, clockpin, LSBFIRST, data_min);
shiftOut(datapin, clockpin, LSBFIRST, data_hour);
digitalWrite(latchpin, HIGH);
delay(100);
}
int POW(int i, int j) {
int result = 1;
if(j == 0) return result;
for(int k = 0; k < j; k++) {
result *= i;
}
return result;
}
void random_display(int times) {
for(int i=0; i<times; i++) {
digitalWrite(latchpin, LOW);
shiftOut(datapin, clockpin, LSBFIRST, random(1,10) * POW(2,4) + random(1,10));
shiftOut(datapin, clockpin, LSBFIRST, random(1,10) * POW(2,4) + random(1,10));
digitalWrite(latchpin, HIGH);
delay(20);
}
}
void nixie_tube_init() {
pinMode(clockpin, OUTPUT);
pinMode(datapin, OUTPUT);
pinMode(latchpin, OUTPUT);
//show something random
random_display(40);
}

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